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Journal: JOURNAL OF DENTAL SCHOOL SHAHID BEHESHTI UNIVERSITY OF MEDICAL SCIENCE | Year:1382 | Volume:21 | Issue:3 | Start Page:319 | End Page:325

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Title

EVALUATION OF THE EFFECT OF ADHESIVES ON THE SHEAR BOND STRENGTH OF COMPOSITE RESIN- TO- ENAMEL JOINT

Pages

 Start Page 319 | End Page 325

Abstract

 Aim: To compare the SHEAR BOND STRENGTHs of composite to enamel using ENAMEL BOND, one -step, two step adhesive systems and without bonding.Material & Methods: SDI ENAMEL BOND, Etch &prime 3.0 (one-step), Excite, Single bond, Prime & bond (two-step) were evaluated. Sixty sound human premolars were divided into six subgroups for each of five adhesives. (N=10).Small flat areas on the buccal surfaces of all teeth were ground in enamel with diamond disk. In all groups, except Etch & prime 3.0, the surface was etched for 15 seconds with 37% phosphoric acid, rinsed with water for 10 seconds.Each bonding system was applied according to its manufacture's directions. After adhesive application, Heliomolar composite restorative materials were applied in 3.8-mm diameter plastic molds to the completed specimens were stored in water for one week before testing. SHEAR BOND STRENGTHs were measured using an instron testing machine (3710-016). Data were subjected to one way ANOVA and Tukey's multiple comparison tests.Result: Mean SHEAR BOND STRENGTHs observed in this study were between 8.17±1.97 Mpa (without bonding) to 19.22±4.99 Mpa (SDI ENAMEL BOND). The mean SHEAR BOND STRENGTH of the subgroup without bonding was significantly lower than all other subgroups. The mean SHEAR BOND STRENGTH of SDI ENAMEL BOND was significantly different than the mean SHEAR BOND STRENGTH of Prime & Bond, but there was no significant difference for other subgroups with each other and with SDI ENAMEL BOND.Conclusion: The results of this study suggest that mean SHEAR BOND STRENGTH for SDI ENAMEL BOND is higher than the other adhesive systems. Unusing of bonding shows significantly lower bond strengths than the other adhesives. There were no significant difference bond strength between one-step and two step adhesive bondings.

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